Since our daughter, Rosa was born, three years ago today, we’ve been Metro parents. Rosa took her first bus trip home from the hospital at one day old and has ridden almost daily ever since. What I’ve learned is that there are significant challenges to parenting without a car. This is not because there’s anything inherently unhealthy or inconvenient about taking kids on public transit, but because most U.S. cities, including mine, were built (or rebuilt) to accommodate cars. I’ve also learned that opting to continue our bus-based life was an excellent choice for our children’s health and well-being. Here’s why.